Hi Michael, I recommend not to use this argument in MacRuby at this point. it is safer to pass a value by assigning it as an instance variable of the observer/delegate/whatever receiver object instead, using #instance_variable_set. Laurent On Jan 9, 2010, at 12:01 AM, Michael Johnston wrote:
I'm working through the PragProg Core Data book, and have encountered an issue passing contextInfo to NSOpenPanel.beginSheetForDirectory
This issue was discussed on the list previously by Dr. Nic: http://www.mail-archive.com/macruby-devel@lists.macosforge.org/msg00330.html
The problem is that there doesn't seem to be a way to cast an object pointer to a void pointer in Macruby, but when openPanel calls the callback assigned in didEndSelector it does cast the pointer passed in contextInfo to a void pointer, leading to a type error when the callback is called:
{{{ 2010-01-08 23:44:49.580 GrokkingRecipesRuby[34059:10b] expected instance of Pointer of type `v', got `@' }}}
I tried assigning my object to a Pointer.new('^v') and Pointer.new (:uchar) but this also caused type errors.
is there any workaround for this?
Cheerio,
Michael Johnston lastobelus@mac.com
_______________________________________________ MacRuby-devel mailing list MacRuby-devel@lists.macosforge.org http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel